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Message: <blockquote data-quote="bera" data-source="post: 1064139743" data-attributes="member: 57493">can i park my problem and how i solved here in your thread... ?? to lazy to open new one...hehehe for the past few days my car been acting up...the symptom were1. rough/high rpm idling2. massive knocking3. no vvt feel / engine tone change...i had some free time so i decided to DIY...i might as well clean my iscv while i'm at it...this are the basic tools needed...1. carb cleaner2. Phillips screwdriver. (normal one also can)3. pair of pliers 4. replacement air hose (i'm using generic silicon hose 8mm...if you ask me...i'll advice using 6mm)as a preparation...i highly suggest you remove your airfilter hose from the airbox to the plenum...https://www.zerotohundred.com/forums/attachments/460648.vBlocate the iscv outlet which directly connect to inlet manifold...i already remove the clip as seen here...https://www.zerotohundred.com/forums/attachments/460649.vBremove the hose from the metal attachment...i prefer to do this from the top because its easier to do...a lot more working space compared to removing the hose from the iscv unit itself...https://www.zerotohundred.com/forums/attachments/460650.vBnow locate the air intake rubber hose which feed air to iscv from your plenum...https://www.zerotohundred.com/forums/attachments/460652.vBhere a view from another angle...https://www.zerotohundred.com/forums/attachments/460653.vBdetach the rubber hose from the plenum...here i turn the hose slightly upward so that carb cleaning chemical dont spill all over the place... https://www.zerotohundred.com/forums/attachments/460654.vBspray the carb cleaner...i normally let the chemical soak for a while before draining the fluid via detached the rubber hose from the plenum...(repeat until self satisfied)once satisfied...reinstall everything in reverse order...use the extra carb cleaner i had left to check for vacuum leak...just spray it at those vacuum hose joints and end...if there is a leak...you'll notice slight drop in engine tone...I've done this test after reassemble the the whole thing above...please take note...there a big different between fuel line and vacuum...don't ever interchange between those two...https://www.zerotohundred.com/forums/attachments/460640.vBwhat looks like your ordinary vacuum/air hose...https://www.zerotohundred.com/forums/attachments/460656.vBbut upon close inspection... yikes...its already cracked and torn... only the clip holding it in place...this end is connected to the power steering vacuum line...it is sandwiched between the firewall and the underside of air intake plenum...a little bit hard to reach but i still can manage pull out and reinstall new hose without removing the plenum...this vacuum traces back to the throttle body assembly...you can see in the first pic...i replaced the hose (noticed the blue one)...no wonder my car been acting up...my best guess is that the vacuum leak messed up the whole map sensor reading...hence the problem i listed above...since changing the hose is practically a straight forward procedure...i wont go into much detail...measure it...cut to fit...and replace the old hose...once done...double check using carb spray method again...and readjust if still got leak...post mortem result1. idling now spot on 950 rpm when engine is at operating temperature.2. iscv function improve (tested as per service manual method)3. improved and can feel the vvt kick in again... yeaayyy....<img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/driver.gif"  class="smilie" loading="lazy" alt=":driver:" title="Driver    :driver:" data-shortname=":driver:" />4. no more knockinghappy DIY'ingDISCLAIMER:this is by no right the right way to do things...and i will not be held responsible if somehow or somewhat you manage to f*&ked up your car/engine/ride by following this/my method... <img src="http://zerotohundred.com/forums/styles/default/xenforo/smilies/burnout.gif"  class="smilie" loading="lazy" alt=":burnout:" title="Burnout    :burnout:" data-shortname=":burnout:" /></blockquote>

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